The Docker image in this folder is a builder image. It is self contained and allows users to build the binaries themselves. There is no requirement on having Rust or any other toolchain installed but a working Docker environment.

Unlike the parity/polkadot image which contains a single binary (polkadot!) used by default, the image in this folder builds and contains several binaries and you need to provide the name of the binary to be called.

You should refer to the .Dockerfile for the actual list. At the time of editing, the list of included binaries is:

substrate
subkey
node-template
chain-spec-builder

To generate the latest parity/substrate image. Please first run:

./build.sh

The image can be used by passing the selected binary followed by the appropriate tags for this binary.

Your best guess to get started is to pass the --help flag. Here are a few examples:

docker run --rm -it parity/substrate substrate --version
docker run --rm -it parity/substrate subkey --help
docker run --rm -it parity/substrate node-template --version
docker run --rm -it parity/substrate chain-spec-builder --help